Barcode / QR Code / ISBN
Barcode & QR Scanner
Scan QR codes, product barcodes, and ISBN book codes with your camera. Decoding happens entirely in this browser with the bundled ZXing library — camera access starts only after you press Start; frames and decoded values are never uploaded.
Idle — press Start to scan
🔍Point camera at a code
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Real ZXing Decoding
This uses the same ZXing (Zebra Crossing) library used in production barcode scanning apps — it reads QR, EAN-13/8, UPC-A/E, Code 39/93/128, and more, directly from live camera frames.
Real ISBN-13 Checksum
Books scan as EAN-13 codes starting with 978/979. The check digit is verified with the real ISBN-13 weighted checksum algorithm (alternating ×1/×3 weights mod 10).